Answered: find the probability that exactly 4 of…

Math

Probability

find the probability that exactly 4 of them use their smartphones in meetings or classes

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

Assume that when adults with smartphones are randomly selected, 43% use them in meetings or classes. If 8 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes.

Expert Solution

Step 1

It is given that the random variable X i.e, smartphones in meetings or classes follows Binomial distribution with parameter p = 43% = 0.43 and n = 8.

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